Surf Forecasts:
Kohala Lighthouse surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 5AM (local time) - 16ft (5.0m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 16ft (5.0m), 12s period, ENE swell with 6,869 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 2AM (local time) - 16ft (5.0m), 12s period with ENE swell.
Best Forecast Surf Conditions for Kohala Lighthouse this week:
The surf forecast for Kohala Lighthouse over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 16) at 2AM. The primary swell is predicted to be 5.0m and 12s period with a secondary swell of 0.3m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kohala Lighthouse in the next 16 days are 5.0m 12s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 12s period and expected on Friday (Aug 14) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 16th Aug) | 16ft (5.0m) 12s |
| Best Surf | 5AM (Sun 16th Aug) | 16ft (5.0m) 11s |
| Most Powerful | 2AM (Sun 16th Aug) | 16ft (5.0m) 12s |
Table - best surf conditions forecast for Kohala Lighthouse over the next 16 days.
The Lowdown
Hey, Rusty here. Only one break in the mix for the next 16 days: Kohala Lighthouse (Big Island). Gotta be honest—most of this run looks pretty rough with solid cross-shore winds and chop. Water temp’s 81°, about average for the season, so at least that’s comfortable.
From Monday 10th through Wednesday 12th, we’ve got clear skies but ENE winds at 15–19 mph. Swell runs 4–6 ft from the ENE, short period 7–8 seconds, and wave energy is weak to moderate (185–383). With the cross-shore wind, it’s lumpy and cross-choppy. Not worth the effort.
Thursday 13th and Friday 14th turn uglier. Winds hit 22–25 mph, cross-onshore, and the swell builds. Friday afternoon shows 8 ft from the ENE with a 12-second period and energy of 1526, but with fresh cross-onshore winds and messy conditions, it’s a write-off. That long-period groundswell would be sweet at a point, but the wind’s ruinin’ it.
Saturday 15th gets heavy. Morning brings thunderstorm risk and strong north onshore wind, with a big 12 ft E swell and 12-second period—energy is 3811. Afternoon swings WSW at 16 mph, cross-offshore, and the swell hits 13 ft from the ENE with energy of 4779. The report says “clean” but only marginal—that’s expert-only territory, over 8 ft.
The real window is Sunday 16th. Sunday morning: 12 ft E swell (9 seconds) with a SSW breeze at 9 mph, cross-offshore, energy 3525. It’s rated “excellent for experienced surfers”. Then afternoon turns glassy—SW wind a whisper at 3 mph, mild, with 8 ft ENE swell, 9-second period, energy 992. Clean and glassy. If you’re experienced, this is the pick. Swell direction isn’t perfect for the reef’s optimum N, but the conditions could still make it sing.
From Monday 17th through Tuesday 25th, it’s back to poor. Winds stay fresh cross-shore ENE at 16–22 mph, swell drops to 3–6 ft, short period 5–8 seconds, and energy never tops 386. A long, flat, lumpy stretch.
Bottom line: Sunday 16th is your best shot—morning for power, afternoon for silky clean waves. The rest is a wind battle. Beginners should sit this one out.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 25°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 40mm), heaviest during Sat afternoon. Warm (max 26°C on Thu morning, min 25°C on Thu night). Mainly strong winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | E 11 | E 12 | ENE 12 | ENE 12 | E 9 | ENE 9 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 344 | 318 | 266 | 261 | 294 | 191 | 163 | 227 | 186 | 254 | 296 | 385 | 597 | 1513 | 1087 | 3798 | 4761 | 6869 | 1827 | 963 | 422 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-off | off | cross-off | glassy | cross |
High Tide | 2:15PM0.97m | 1:44AM0.43m | 2:52PM0.98m | 2:33AM0.48m | 3:26PM0.95m | 3:19AM0.53m | 3:57PM0.90m | 4:05AM0.58m | 4:24PM0.83m | 4:51AM0.61m | 4:48PM0.74m | 5:39AM0.63m | 5:07PM0.65m | ||||||||
Low Tide | 9:17PM0.23m | 7:32AM0.01m | 9:42PM0.21m | 8:20AM0.02m | 10:08PM0.18m | 9:04AM0.07m | 10:33PM0.17m | 9:48AM0.13m | 10:57PM0.15m | 10:31AM0.22m | 11:22PM0.15m | 11:17AM0.31m | 11:46PM0.15m | ||||||||
 | |  | | | | | |  |  | | | | |  |  |  |  |  | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 7 | 16 | 12 | 1 | 3 | 1 |
Temp °C | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 26 |
Feels °C | 26 | 26 | 25 | 25 | 24 | 22 | 24 | 24 | 25 | 24 | 23 | 21 | 22 | 22 | 23 | 23 | 27 | 23 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | W 11 | W 11 | W 13 | W 12 | W 12 | W 12 | E 11 | ESE 12 | W 12 | E 11 | W 11 | W 11 | ENE 12 | ENE 9 | ENE 9 | ENE 8 |
| kJ | 19 | 16 | 14 | 6 | 6 | 22 | 9 | 30 | 11 | 11 | 11 | 61 | 176 | 11 | 1087 | 9 | 10 | 6869 | 1670 | 963 | 422 |
Swell 2 Height (m) Direction Period (s) | W 11 | W 11 | W 10 | W 10 | W 10 | NNW 7 | W 13 | SW 12 | SW 12 | SW 12 | NW 9 | W 12 | W 11 | SW 17 | W 12 | W 14 | W 15 | W 13 | SW 4 | SW 5 | WSW 6 |
| kJ | 20 | 20 | 8 | 8 | 8 | 5 | 13 | 6 | 6 | 5 | 3 | 11 | 10 | 12 | 11 | 4 | 4 | 31 | 7 | 8 | 30 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | N 7 | N 7 | S 16 | S 12 | NW 8 | S 14 | NW 7 | SW 17 | — | W 14 | — | W 13 | WNW 12 | W 12 |
| kJ | 10 | 9 | 8 | 8 | 8 | 7 | 6 | 1 | 1 | 5 | 3 | 2 | 4 | 2 | 12 | — | 4 | — | 28 | 29 | 25 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | NE 8 | E 12 | ENE 12 | — | E 9 | — | — |
| kJ | 344 | 318 | 266 | 261 | 294 | 191 | 163 | 227 | 186 | 254 | 296 | 385 | 597 | 1513 | 270 | 3798 | 4761 | — | 1827 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 71 | 76 | 69 | 76 | 73 | 69 | 71 | 73 | 57 | 69 | 69 | 71 | 69 | 71 | 71 | 71 | 99 | 0 | 0 | 0 | 8 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kohala Lighthouse Surf forecast
The above surf forecast table for Kohala Lighthouse provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kohala Lighthouse can be found by selecting the local surf guide option on the grey menu. Our Kohala Lighthouse surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kohala Lighthouse) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Kohala Lighthouse may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Kohala Lighthouse is 87 km (54 miles) from Kihei. If you plan a vacation in Big Island, look for hotels and other accommodation in Kihei. Kihei has rooms for a wide range of budgets as well as car hire and transport links.
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